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    MICROPERFORATED CONDUIT
    5.
    发明申请
    MICROPERFORATED CONDUIT 审中-公开

    公开(公告)号：WO2019005858A1

    公开(公告)日：2019-01-03

    申请号：PCT/US2018/039585

    申请日：2018-06-26

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： LEE, Seungkyu ,  HANSCHEN, Thomas P. ,  ALEXANDER, Jonathan H. ,  HERDTLE, Thomas ,  GERDES, Ronald W.

    IPC: G10K11/16 ,  F24F13/24 ,  F16L55/033

    Abstract: Provided are conduits for air flow that are capable of reducing noise and related methods. The provided conduits include a first section that is tubular and substantially non-perforated and a second section with at least a portion having a multiplicity of microperforations that provide an average flow resistance of from 50 MKS Rayls to 8000 MKS Rayls therethrough. The second section is either (a) tubular and connected in series with the first section, with an outer surface of the second section being in fluid communication with an outer surface of the conduit, or (b) disposed within the first section.

    ACOUSTIC DEVICE
    6.
    发明申请
    ACOUSTIC DEVICE 审中-公开
    声音设备

    公开(公告)号：WO2016040431A1

    公开(公告)日：2016-03-17

    申请号：PCT/US2015/049111

    申请日：2015-09-09

    Applicant: 3M INNOVATIVE PROPERTIES COMPANY

    Inventor： HANSCHEN, Thomas P. ,  ALEXANDER, Jonathan H. ,  MARTINSON, Paul A. ,  BOLTON, Stuart J. ,  LEE, Seungkyu ,  HERDTLE, Thomas ,  GERDES, Ronald W.

    IPC: G10K11/16 ,  F02M35/12 ,  F01N1/02

    CPC classification number: F01N1/006 ,  F01N1/026 ,  F01N13/02 ,  F01N2470/02 ,  F01N2470/24 ,  F01N2490/155 ,  F02M35/1216 ,  F02M35/1255 ,  F24F13/24 ,  F24F2013/245 ,  G10K11/161

    Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

    Abstract translation: 提供的声学装置包括限定膨胀室的外部壳体和延伸穿过膨胀室并将其分隔成中心室和邻近中心室的周边室的壁，其中入口和出口与中心室连通，并且其中壁包括 多个孔通过其形成，以允许空气移动到中心和膨胀室的空间，多个孔的尺寸设置成提供范围从100MMS雷尔至5000MMS雷尔的平均流阻。 声学装置有利地显示出显着的声音衰减，同时简化空气流动以减少穿过膨胀室的压降。

    ACOUSTIC DEVICE
    9.
    发明公开
    ACOUSTIC DEVICE 审中-公开
    声学装置

    公开(公告)号：EP3192068A1

    公开(公告)日：2017-07-19

    申请号：EP15767650.3

    申请日：2015-09-09

    Applicant: 3M Innovative Properties Company

    Inventor： HANSCHEN, Thomas P. ,  ALEXANDER, Jonathan H. ,  MARTINSON, Paul A. ,  BOLTON, John Stuart ,  LEE, Seungkyu ,  HERDTLE, Thomas ,  GERDES, Ronald W.

    IPC: G10K11/16 ,  F02M35/12 ,  F01N1/02

    CPC classification number: F01N1/006 ,  F01N1/026 ,  F01N13/02 ,  F01N2470/02 ,  F01N2470/24 ,  F01N2490/155 ,  F02M35/1216 ,  F02M35/1255 ,  F24F13/24 ,  F24F2013/245 ,  G10K11/161

    Abstract: Provided acoustic devices include an external housing defining an expansion chamber and a wall extending through and partitioning the expansion chamber into a central chamber and a peripheral chamber adjacent the central chamber, wherein an inlet and outlet communicate with the central chamber, and wherein the wall includes a plurality of apertures formed therethrough to allow air movement to and from the central and expansion chambers, the plurality of apertures sized to provide an average flow resistance ranging from 100 MKS Rayls to 5000 MKS Rayls. The acoustic devices advantageously show significant sound attenuation while streamlining air flow to reduce pressure drop across the expansion chamber.

    Abstract translation: 提供的声学装置包括限定膨胀室和延伸穿过膨胀室并将膨胀室分隔成中央室和邻近中央室的外围室的壁的外部壳体，其中入口和出口与中央室连通，并且其中壁包括 多个穿过其形成的孔，以允许空气移动到中央室和膨胀室以及从中央室和膨胀室移动，所述多个孔的尺寸设定为提供范围从100 MKS瑞利到5000 MKS瑞利的平均流动阻力。 声学装置有利地显示出显着的声音衰减，同时流线化空气流动以减小膨胀室两端的压降。

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